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2021 Fiscal Year Final Research Report

Magneto-scientific approach for high Tc cuprate superconductors with high Ic

Research Project

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Project/Area Number 17H03235
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Electronic materials/Electric materials
Research InstitutionKyoto University of Advanced Science (2019-2021)
Kyoto University (2017-2018)

Principal Investigator

Horii Shigeru  京都先端科学大学, 工学部, 教授 (80323533)

Co-Investigator(Kenkyū-buntansha) 下山 淳一  青山学院大学, 理工学部, 教授 (20251366)
一瀬 中  一般財団法人電力中央研究所, 電力技術研究所, 上席研究員 (70371284)
Project Period (FY) 2017-04-01 – 2022-03-31
Keywords磁場配向 / 回転変調磁場 / 磁気異方性 / 双晶
Outline of Final Research Achievements

In this research project, orientation behaviors of REBa2Cu3Oy superconductor particles under modulated rotating magnetic fields (MRFs) and their twin microstructures were clarified. Based on these, Directions to fabricate REBa2Cu3Oy superconducting materials with higher orientation degrees were obtained in both aspects from the crystallochemistry and MRF conditions. Moreover, a sintered sheet of biaxial oriented DyBa2Cu3Oy has been successfully fabricated and, however, its critical current density was low due to insufficient intergrain connection. Although there are issues to overcome, we found the magnetic alignment was a good candidate of production process of superconducting materials with both of high orientation degrees and large cross sections.

Free Research Field

電子材料工学

Academic Significance and Societal Importance of the Research Achievements

2軸磁場配向法は室温で行えるエピタキシーフリープロセスであり、粉末原料を擬似単結晶に変換する技術である。本研究課題は材料科学と磁気科学を融合した新しい学理を構築し、高度な電気・電子材料を創出しようとするこれまでにない研究である。
超伝導分野では、従来技術では実現できない高温超伝導線の理想形である「高配向性」と「大断面積」を両立した高い送電能を有する高温超伝導線の新製造法となりうる。低磁場配向技術など安価な製造プロセスの開発により実用金属超伝導線レベルの性能コストにつながる可能性があり、超伝導送電線や医療用・磁気浮上列車用ソレノイド磁石への展開が期待される。

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Published: 2023-01-30  

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